YourWishes/jerryscript
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Optimize uint32 hash computation.

Browse Source 
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2016-05-30 23:43:19 -07:00
parent 71c32a1d96
commit a5d9701f60
3 changed files with 26 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/ecma/base/ecma-helpers-string.c
+17 -7
View File
@@ -229,15 +229,25 @@ ecma_new_ecma_string_from_code_unit (ecma_char_t code_unit) /**< code unit */
ecma_string_t *
ecma_new_ecma_string_from_uint32 (uint32_t uint32_number) /**< UInt32-represented ecma-number */
{
lit_utf8_byte_t byte_buf[ECMA_MAX_CHARS_IN_STRINGIFIED_UINT32];
lit_utf8_byte_t *buf_p = byte_buf + ECMA_MAX_CHARS_IN_STRINGIFIED_UINT32;
uint32_t value = uint32_number;
do
{
JERRY_ASSERT (buf_p >= byte_buf);
buf_p--;
*buf_p = (lit_utf8_byte_t) ((value % 10) + LIT_CHAR_0);
value /= 10;
}
while (value != 0);
lit_utf8_size_t size = (lit_utf8_size_t) (byte_buf + ECMA_MAX_CHARS_IN_STRINGIFIED_UINT32 - buf_p);
ecma_string_t *string_desc_p = ecma_alloc_string ();
string_desc_p->refs_and_container = ECMA_STRING_CONTAINER_UINT32_IN_DESC | ECMA_STRING_REF_ONE;
lit_utf8_byte_t byte_buf[ECMA_MAX_CHARS_IN_STRINGIFIED_UINT32];
lit_utf8_size_t bytes_copied = ecma_uint32_to_utf8_string (uint32_number,
byte_buf,
ECMA_MAX_CHARS_IN_STRINGIFIED_UINT32);
string_desc_p->hash = lit_utf8_string_calc_hash (byte_buf, bytes_copied);
string_desc_p->hash = lit_utf8_string_calc_hash (buf_p, size);
string_desc_p->u.common_field = 0;
string_desc_p->u.uint32_number = uint32_number;